The best replacement for esxi 4.1 is esx 4.1.

The best alternatives to esxi 4.1 are rated as following:
★★★★★  esx 4.1
★★★  xenserver

Your alternative for esxi 4.1 is not listed? Suggest!
Speaking about esxi 4.1, one probably shouldn't forget about openmanage.

Other search terms related to esxi 4.1 and their ratings are:
★★★★★ openmanage
★ vcenter 5
★ vcenter
★ update manager
You have in mind a companion for esxi 4.1 and it is not yet here? Propose!



Google Trends

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esxi 4.1
esx 4.1
xenserver